1.Lentivirus mediated CCN1 gene on growth and migration of rat bone marrow mesenchymal stem cells
Zhan SUN ; Xueli GONG ; Xinjian RAN ; Qi MA ; Mei LONG
Chinese Journal of Pathophysiology 2014;(8):1493-1496
[ABSTRACT]AIM:Toinvestigatetheroleofcysteine-rich61(Cyr61/CNN1)inproliferationandmigrationof bone marrow mesenchymal stem cells ( BMSCs ) .METHODS: The lentiviral vector carrying CCN 1 ( Lenti-GFP-CCN1 ) was constructed and then transfected into the rat BMSCs .The cells were divided into non-transfection group , transfection group ( transfected with Lenti-GFP-CCN1 ) and negative control group ( Lenti-GFP ) .The fluorescence intensity of the transfected BMSCs was observed under inverted fluorescence microscope .The effects of CCN1 on the proliferation and mi-gration of BMSCs were detected by MTT assay and scratch wound healing assay .RESULTS:The proliferation of BMSCs transfected with Lenti-GFP CCN1 had no significant difference compared with negative control group and control group .The width/thickness ratio of migrated BMSCs in wound healing was significantly higher in Lenti-GFP-CCN1 group than that in negative control group and control group (P<0.05).CONCLUSION:Exogenous CCN1 promotes the migration of BMSCs.
2.Analysis of 131I radiation internal exposure in nuclear medicine staff of eight hospitals in Guangdong Province
LONG Xuan TAN Zhan HUANG Wei xu MA Rui CUI Fan LIU Yan bing
China Occupational Medicine 2022;52(04):454-
Abstract: Objective ( )
To evaluate the internal exposure levels and risk in nuclear medicine workers NMWs engaged in
Methods
radionuclide therapy in Guangdong Province. A total of 61 NMWs from eight hospitals in Guangdong Province were
selected as the study subjects using the convenient sampling method. The 0.364 MeV full energy peak efficiency was detected in
( ) in vitro , -
deltoid muscle of right upper arm as background and thyroid gland by direct measurement method and the iodine 131
(131 ) Results ,131
I activity in thyroid gland was calculated to evaluate the internal irradiation level. Among the 61 NMWs I was
,
detected in the thyroid gland of four nuclear medical staffs in three hospitals and the detection rate was 6.6%. The median and
- [M( P-P )] 131 ( - )
0 100 percentile 0 100 of thyroid I activity were 42.9 35.1 47.1 Bq. When assuming that the monitoring period was
, M( P-P ) ( - ) ,
30 days the 0 100 of single committed effective dose in thyroid gland was 0.014 0.011 0.015 mSv and the annual dose
( - ) Conclusion
of internal irradiation was 0.162 0.132 0.180 mSv/a. The internal exposure of NMWs in the eight hospitals in
( ) ,
Guangdong Province meets the annual effective dose limits ≤20.000 mSv/a . However it is necessary to pay attention to the
internal radiation protection of NMWs and take reasonable protective measures to reduce the internal exposure risk of NMWs.
3.Comparison of nutritional status between pancreaticojejunostomy and pancreaticogastrostomy following pancreaticoduodenectomy.
Jin-ping MA ; Chuang-qi CHEN ; Shi-rong CAI ; Han-ping SHI ; Yu-long HE ; Wen-hua ZHAN
Chinese Journal of Gastrointestinal Surgery 2012;15(5):457-459
OBJECTIVETo compare the nutritional status between pancreaticojejunostomy(PJ) and pancreaticogastrostomy(PG) following pancreaticoduodenectomy.
METHODSA retrospective clinical analysis was performed on 37 patients undergoing pancreaticoduodenectomy(PD) for duodenal carcinoma and pancreatic non-epithelial tumor with PG(n=19) and PJ(n=18) in the First Hospital of Sun Yat-sen University from April 2006 to December 2010. All the patients had a needle catheter jejunostomy inserted at the conclusion of laparotomy. Postoperative early enteral nutrition and parenteral nutrition was performed for all the patients. Nutritional status of two groups was compared in body mass index (BMI), serum nutritional parameters such as albumin, transferrin and prealbumin before surgery and on 1, 3, and 6 months postoperatively.
RESULTSThere were no significant differences between PG and PJ groups in operative time, blood loss, pancreatic fistula, perioperative death, or postoperative length of hospital stay. One month after surgery, there were no significant differences in BMI [(17.1±7.0) vs. (19.0±4.8) kg/m(2), P>0.05], albumin [(30.1±0.5) vs. (32.1±1.3) g/L, P>0.05], transferrin [(1.89±0.57) vs. (2.01±0.61) g/L, P>0.05] and prealbumin[(0.18±0.05) vs. (0.18±0.09) g/L, P>0.05]. These parameters were decreased at 1 month after surgery, and gradually recovered to baseline or higher than the preoperative levels at 6 months after surgery. However, the differences were still not statistically significant between two groups.
CONCLUSIONSThe influence of PJ and PG on the postoperative nutritional status are comparable.
Adult ; Aged ; Female ; Gastrostomy ; Humans ; Male ; Middle Aged ; Nutritional Status ; Pancreas ; surgery ; Pancreaticoduodenectomy ; Pancreaticojejunostomy ; Postoperative Period ; Retrospective Studies
4.Local transplantation of endothelial progenitor cells to reduce restenosis after angioplasty in rabbit model
Zhan-Long MA ; Gao-Jun TENG ; Xiao-Li MAI ; Sheng-Hong JU ; Jun-Hui SUN ; Jun CHEN ; Hong-Ying ZHANG ; Hong-Jian SHI ; Hui YU ; Guozhao LI ;
Journal of Interventional Radiology 1994;0(02):-
Objective To investigate homografting vascular endothelial progenitor cells(EPCs)for preventing restenosis formation of carotid artery in New Zealand white rabbit models.Methods EPCs of New Zealand white rabbits were isolated,confirmed and expanded though the injured carotid arterial endothelium of rabbit model induced by dilatation with a 2.5 F balloon;and then EPCs were transplanted into the injured endothelium of the cells transplantation group(n=13,3 of them were transplanted with fluorencently-labeled- EPCs),while equal volume of saline without EPCs was injected into the injured endothelium in the control group(n=8).Histopathology was performed at 4 days after transplantation for the 2 rabbits,with fluorencently-labeled-EPCs.All of the rest remained rabbits were killed 4 weeks later for histological examinations.Results The histopathological slides showed that the fluorescence-positive expression existed in the injured endothelium 4 days after transplantation.At 4 weeks after the EPCs transplantation,there were less restenosis and less vascular wall thickening in the rabbits of cells transplantation group than those of the control group(P<0.01).Conclusion The local interventional homografting heterogeneous endothelial progenitor cells can prevent restenosis after the carotid artery angioplasty in New Zealand White rabbit model. (J Intervent Radiol,2007,16:95-98)
5.A study of mechanisms of brain injury during liver ischemia and reperfusion injury in rats.
Ta-lin TAN ; Hong-mei WANG ; Jian-long ZHANG ; Qi MA ; Zhan SUN ; Xiao-juan MA
Chinese Journal of Hepatology 2006;14(7):553-555
Animals
;
Brain
;
pathology
;
Female
;
Liver Diseases
;
metabolism
;
pathology
;
Male
;
Nitric Oxide Synthase
;
metabolism
;
Proto-Oncogene Proteins c-fos
;
metabolism
;
Rats
;
Rats, Wistar
;
Reperfusion Injury
;
metabolism
;
pathology
6.Posterior debridement, grafting and internal fixation for treatment of non-specific lumbar intervertebral infection
Xiaochun YANG ; Long CHANG ; Yanbing SHANG ; Xiaomin MA ; Weidong JIN ; Zhigang SUO ; Wenxin MA ; Zili WANG ; Xuehua ZHAN ; Huiqiang DING
Chinese Journal of Orthopaedics 2017;37(18):1136-1142
Objective To explore the effect of posterior debridement, grafting and internal fixation for treatment of non-specific lumbar intervertebral infection. Methods Clinical data of 20 patients with non-specific lumbar intervertebral infection treated in General Hospital of Ningxia Medical University from October 2013 to June 2013 were retrospectively analyzed. There were 15 males and 5 females with an average age of 41 years (range, 36-51 years). All patients suffered from single lumbar inter-vertebral infection, including 3 cases at L2/3,4 at L3/4,10 at L4/5 and 3 at L5/S1. All 20 cases underwent one-stage posterior debride-ment, autogenous bone grafting and internal fixation, tissue samples in focus were collected for bacterial culture and pathological examination. The disease controlling statues were evaluated based on laboratory results of ESR and CRP. Imaging examinations were taken to evaluate the fusion of vertebral body. Clinical effects were evaluated using the visual analog scale (VAS) and the Jap-anese Orthopaedic Association scores (JOA) score of lumbar fumction. Results All patients underwent the surgery successfully. The surgery duration time was 90-160 min, average 125 min, and the blood loss was 200-700 ml, average 360 ml. Cerebrospinal fluid leakage occurred in one case. Postoperatively, all patients experienced significant reliefof back pain, improving in the func-tion of movement, and no fever. The lower back VAS score: average (5.35 ± 1.15) points before operation , average (2.76 ± 0.34) points one week after operation, and an average score of (0.85±0.65) points by the last follow-up time. JOA lumbar function score:all patients were effective after operation, the improvement rate was excellent in 65%(13cases), good in 25%(5 cases), and pass-able in 10%(2cases). Comparing with preoperation, the excellent and good rate was 90%. All patients ESR and CRP returned to normal levels at the last follow-up. Ordinary bacterial culture was positive in 8 cases and negative in 12 cases. The pathogens iden-tified were staphylococcus aureus (6 cases), Escherichia coli (2 cases) and staphylococcus epidermidis (2cases). All incisions achieved primary healing. All patients were followed up from 6-18 months (average,12 months), and the symptom of pain relieved significantly. No recurrent infection had happened. A solid bony fusion was found in all patients at 6-14 months (average, 8.5 months) after the surgery. Conclusion Posterior debridement, grafting and internal fixation are effective treatments for non-spe-cific lumbar intervertebral infection, can reduce the time of staying in hospital, this operation is safe and reliable.
7.Comparison of clinicopathological characteristics and prognosis of mucinous and poorly differentiated gastric cancer.
Jin-ping MA ; Jian-hui CHEN ; Shi-rong CAI ; Chuang-qi CHEN ; Ji CUI ; Zhao WANG ; Kai-ming WU ; Yu-long HE ; Wen-hua ZHAN
Chinese Journal of Gastrointestinal Surgery 2010;13(12):903-906
OBJECTIVETo investigate the clinicopathological characteristics between mucinous gastric cancer (MGC) and poorly differentiated gastric cancer(PDGC) and factors associated with prognosis.
METHODSMedical records of 1016 consecutive patients with gastric cancer were retrospectively reviewed. Sixty-eight patients with MGC and 508 with PDGC were identified. Clinicopathologic characteristics and overall survival data were analyzed.
RESULTSAs compared to PDGC patients, patients with MGC were significantly older [(59.2±11.9) years vs. (54.1±13.2) years], had significantly more distant metastasis(36.8% vs. 23.8%), more peritoneal seeding(29.4% vs. 16.9%), and less radical resection(60.3% vs. 76.6%). There were no significant differences in 5-year survival rate between MGC and PDGC patients(29.4% vs. 35.5%). However, for tumors in the middle third of the stomach, the survival rate of MGC patients was lower than that of PDGC. Using a Cox proportional hazard ratio model, lymph node involvement and radical resection were independent prognostic factors for survival of MGC patients, while tumor invasion, lymph node involvement, and radical resection were associated with survival in patients with PDGC.
CONCLUSIONAlthough MGC and PDGC differ in age, frequencies of peritoneal seeding, distant metastasis, and rate of radical resection, overall survival is comparable.
Aged ; Female ; Humans ; Male ; Middle Aged ; Prognosis ; Retrospective Studies ; Stomach Neoplasms ; classification ; pathology
8.Impact of different gastrectomy and reconstruction methods on prognosis and quality of life in proximal gastric cancer.
Hui WU ; Yu-long HE ; Jian-bo XU ; Shi-rong CAI ; Jin-ping MA ; Chuang-qi CHEN ; Xin-hua ZHANG ; Liang WANG ; Wen-hua ZHAN
Chinese Journal of Surgery 2012;50(10):875-878
OBJECTIVETo evaluate the impact of different gastrectomy and reconstruction method on prognosis and quality of life in proximal gastric cancer.
METHODSThe 265 cases of proximal gastric cancer received radical resection, according to gastrectomy or reconstruction method, were divided into proximal gastrectomy/gastroesophagostomy group (PG) (n = 63) and total gastrectomy/esophagojejunostomy group (TG) (n = 202). The clinical pathologic features, prognosis, postoperative quality of life in 2 groups were compared.
RESULTSThere had no significant differences in age, gender, CEA value between two groups (all P > 0.05). In PG and TG group, tumor size (cm), ratio of organic invasion, lymph nodes metastasis, distal metastasis, TNM IV stage, Borrmann typing, poor or undifferentiated carcinoma was 2.9 ± 1.9 vs. 4.8 ± 2.8, 9.5% vs. 32.2%, 64.7% vs. 70.6%, 0 vs. 8.4%, 6.9% vs. 31.8%, 44.4% vs. 69.2%, 31.7% vs. 53.7%, respectively, all with significant difference (t = -6.260, χ(2) = 29.473, 14.559, 5.665, 32.483, 12.588, 10.954, all P < 0.05). In PG and TG group, the ratio of D3 and D3(+) resection, multi-visceral resection, complications was 0 vs. 13.8%, 9.5% vs. 38.6%, 7.9% vs. 1.5% respectively, showed increasing range of resection and decreasing complications significantly in TG group (all P < 0.05). The median survival time (months) was 62.5 vs. 78.9 in TG and PG group respectively, without significant difference (P > 0.05). In 2 groups, the evaluation index of post-operative quality of life without significant differences (P > 0.05).
CONCLUSIONSFor proximal gastric cancer, although the cases received TG with worse clinicopathological features, which prognosis was similar to that received PG. The postoperative quality of life without significant difference between the cases received gastroesophagostomy and esophagojejunostomy.
Adult ; Aged ; Aged, 80 and over ; Female ; Gastrectomy ; methods ; Gastroenterostomy ; methods ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Prognosis ; Quality of Life ; Stomach Neoplasms ; mortality ; pathology ; surgery
9.Clinicopathological analysis of synchronous liver metastasis in gastric cancer and evaluation of surgical outcomes.
Yu-ming LI ; Wen-hua ZHAN ; Fang-hai HAN ; Yu-long HE ; Jun-sheng PENG ; Shi-rong CAI ; Jin-ping MA ; Gang ZHAO
Chinese Journal of Gastrointestinal Surgery 2006;9(2):127-130
OBJECTIVETo analyze the clinicopathological factors affecting synchronous liver metastasis in gastric cancer,and evaluate its surgical outcome.
METHODSClinical data of 44 patients with synchronous hepatic metastasis from gastric cancer from Aug. 1994 to Feb. 2004 were reviewed retrospectively, and compared with those of 576 gastric cancer patients without hepatic metastasis to analyze the clinicopathological factors affecting synchronous liver metastasis from gastric cancer. The survivals after radical resection, palliative and exploratory operation were compared.
RESULTSUnivariate analysis revealed that ascites, pelvic and peritoneal seeding, serosal invasion, lymph node metastasis, involvement of neighboring organs, Borrmann types,depth of infiltration were correlated with synchronous hepatic metastasis from gastric cancer (P< 0.01). Logistic regression showed peritoneal seeding (P=0.003, OR=1.629), serosal infiltration (P=0.000, OR=3.000), lymph node metastasis (P=0.081, OR=1.689) were independent risk factors for synchronous hepatic metastasis from gastric cancer. Sixteen (36.4%) patients received radical excision, 15 (34.1%) patients palliative operation, and 13 (29.5 %) patients exploratory operation,and the median survival times were 19.5, 11.0 and 6.2 months respectively (P< 0.05).
CONCLUSIONSPeritoneal seeding,serosal infiltration, lymph node metastasis are most important risk factors for synchronous hepatic metastasis from gastric cancer. Radical resection of gastric primary lesion and hepatic metastases can significantly prolong survival time.
Aged ; Female ; Follow-Up Studies ; Gastrectomy ; Hepatectomy ; Humans ; Liver Neoplasms ; pathology ; secondary ; surgery ; Male ; Middle Aged ; Neoplasm Metastasis ; Neoplasm Staging ; Prognosis ; Retrospective Studies ; Stomach Neoplasms ; pathology ; surgery ; Survival Rate ; Treatment Outcome
10.Risk factors of elderly patients with total gastrectomy for gastric cancer.
Gang ZHAO ; Wen-hua ZHAN ; Jun-sheng PENG ; Yu-long HE ; Jin-ping MA ; Yan-guo YAN ; Wen-guang DONG ; Shi-rong CAI ; Jian-ping WANG
Chinese Journal of Gastrointestinal Surgery 2006;9(1):31-33
OBJECTIVETo analyze the relative risk factors of elderly patients with total gastrectomy for gastric cancer.
METHODSThe risk factors for hospital death and postoperative complications in 131 elderly patients undergoing total gastrectomy for gastric cancer from Aug. 1994 to Aug. 2004 were analyzed retrospectively.
RESULTSThe risk factors for hospital death and postoperative complications included coexistent diseases, hemoglobin level less than 80 g/L, albumin level less than 35 g/L, body mass index(BMI) less than 18.5 kg/m (2), intraoperative blood loss more than 1000 ml, operating time longer than 5 h, combined resection of the spleen or pancreas. The relative risks were 1.57, 1.74, 2.97, 4.23, 2.21, 2.28, 3.80 respectively for hospital death, and 1.50, 1.90, 2.38, 2.12, 2.45, 1.66, 3.41 for postoperative complications.
CONCLUSIONThe risk factors of the elderly patients with total gastrectomy for gastric cancer should be considered carefully during the perioperative period. It can increase the security of the procedure to control these risk factors.
Aged ; Aged, 80 and over ; Contraindications ; Female ; Gastrectomy ; adverse effects ; Hospital Mortality ; Humans ; Male ; Middle Aged ; Neoplasm Staging ; Postoperative Complications ; epidemiology ; Retrospective Studies ; Risk Assessment ; Risk Factors ; Stomach Neoplasms ; pathology ; surgery